Free the command buffer when tabs are switched

gpu/command_buffer/client/mapped_memory_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/client/mapped_memory.h"
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/memory/scoped_ptr.h"
 #include "gpu/command_buffer/client/cmd_buffer_helper.h"
 #include "gpu/command_buffer/service/mocks.h"
@@ skipping 26 matching lines @@
     EXPECT_CALL(*api_mock_, DoCommand(cmd::kNoop, 0, _))
         .WillRepeatedly(Return(error::kNoError));
     // Forward the SetToken calls to the engine
     EXPECT_CALL(*api_mock_.get(), DoCommand(cmd::kSetToken, 1, _))
         .WillRepeatedly(DoAll(Invoke(api_mock_.get(), &AsyncAPIMock::SetToken),
                               Return(error::kNoError)));
 
     command_buffer_.reset(new CommandBufferService);
     command_buffer_->Initialize();
 
-    parser_ = new CommandParser(api_mock_.get());
-
     gpu_scheduler_.reset(new GpuScheduler(
-        command_buffer_.get(), NULL, parser_));
+        command_buffer_.get(), api_mock_.get(), NULL));
     command_buffer_->SetPutOffsetChangeCallback(base::Bind(
         &GpuScheduler::PutChanged, base::Unretained(gpu_scheduler_.get())));
+    command_buffer_->SetGetBufferChangeCallback(base::Bind(
+        &GpuScheduler::SetGetBuffer, base::Unretained(gpu_scheduler_.get())));
 
     api_mock_->set_engine(gpu_scheduler_.get());
 
     helper_.reset(new CommandBufferHelper(command_buffer_.get()));
     helper_->Initialize(kBufferSize);
-
-    // Note: parser->SetBuffer would normally be called through
-    // helper_->Initialize but currently it needs a GpuCommandBufferStub as the
-    // CommandBuffer instead of the CommandBufferService for that to happen.
-    Buffer ring_buffer = helper_->get_ring_buffer();
-    parser_->SetBuffer(ring_buffer.ptr, ring_buffer.size, 0, ring_buffer.size);
   }
 
   int32 GetToken() {
     return command_buffer_->GetState().token;
   }
 
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool_;
 #endif
   MessageLoop message_loop_;
   scoped_ptr<AsyncAPIMock> api_mock_;
   scoped_ptr<CommandBufferService> command_buffer_;
   scoped_ptr<GpuScheduler> gpu_scheduler_;
-  CommandParser* parser_;
   scoped_ptr<CommandBufferHelper> helper_;
 };
 
 #ifndef _MSC_VER
 const unsigned int MappedMemoryTestBase::kBufferSize;
 #endif
 
 // Test fixture for MemoryChunk test - Creates a MemoryChunk, using a
 // CommandBufferHelper with a mock AsyncAPIInterface for its interface (calling
 // it directly, not through the RPC mechanism), making sure Noops are ignored
@@ skipping 209 matching lines @@
   ASSERT_TRUE(mem3);
   EXPECT_NE(-1, id1);
   EXPECT_EQ(id1, id2);
   EXPECT_NE(id2, id3);
   EXPECT_EQ(0u, offset1);
   EXPECT_EQ(kSize, offset2);
   EXPECT_EQ(0u, offset3);
 }
 
 }  // namespace gpu